进一步有进一步惊喜

/**
  * 解密文件
  * @param sourcePath 源文件
  * @param destinationPath 保存的文件
  * @param key 密钥
  */
public static void decryptFile(String sourcePath,String destinationPath,String key) throws Exception {
    File outFile = new File(destinationPath);
    if (!outFile.exists()){
        outFile.createNewFile();
    }
    // 待解密的文件输入流
    FileInputStream fis = new FileInputStream(sourcePath);
    FileOutputStream fos = new FileOutputStream(outFile);

    Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
      byte[] bytes = key.getBytes();
    SecretKeySpec secretKey = new SecretKeySpec(bytes,"AES");
    IvParameterSpec iv = new IvParameterSpec(key.getBytes());
    cipher.init(Cipher.DECRYPT_MODE,secretKey,iv);
    // 解密流
    CipherInputStream cis = new CipherInputStream(fis,cipher);
    byte[] buffer = new byte[1024];
    int n = 0;
    while ((n = cis.read(buffer)) != -1){
        fos.write(buffer,0,n);
    }
    System.out.println("解密成功:");
    cis.close();
    fos.close();
}

public static void main(String[] args) {
    String sourcePath ="G:\\win下载\\m3u8\\";
    String destination = "G:\\win下载\\m3u8\\";
    String m3u8 = "G:\\win下载\\m3u8\\m3u8.m3u8";
    String key = "tkr87ysao6qehn95";
    FileReader fileReader = null;
    BufferedReader reader = null;
    ArrayList<String> files = new ArrayList<>();
    try{
        fileReader = new FileReader(m3u8);
        reader = new BufferedReader(fileReader);
        String filename = null;
        while (( filename = reader.readLine())!=null){
            if(filename.charAt(0)!='#'){
                files.add(filename);
            }
        }
        if(fileReader!=null){
            fileReader.close();
        }
        if(reader!=null){
            reader.close();
        }
    }catch (IOException e){
        e.printStackTrace();
    }

    int partSize = files.size();
    String sourceFile;
    String destFile;
    try{
        for(int i=0;i < partSize ;i++){
            sourceFile = sourcePath + files.get(i);
            destFile = destination + "e"+files.get(i);
            EncryFileUtil.decryptFile(sourceFile,destFile,key);
        }
        System.out.println("========全部解密成功============");
    }catch (Exception e){
        e.printStackTrace();
    }
    try {
        // 合并数据
        String mergeFilePath = sourcePath+"merge.ts";
        FileOutputStream mergeFile = new FileOutputStream(mergeFilePath);
        for (int i=0;i<partSize;i++){
            String encodeFile = sourcePath +"e"+files.get(i);
            FileInputStream inputStream = new FileInputStream(encodeFile);
            byte[] buffer = new byte[1024];
            int n=0;
            while ((n = inputStream.read(buffer))!= -1){
                mergeFile.write(buffer,0,n);
            }
            inputStream.close();
        }
        System.out.println("合并数据成功");
    }catch (IOException e){
        e.printStackTrace();
    }
}